advanced program-to-program communications

from The Free On-line Dictionary of Computing (8 July 2008)

Advanced Program-to-Program Communications
APPC

   <networking, product> (APPC) An implementation of the {IBM}
   {SNA}/{SDLC} {LU6.2} {protocol} that allows interconnected
   systems to communicate and share the processing of programs.

   (1995-02-03)